Defeasible argumentation
B: But Ellen’s house was burning, and Peter wanted to save Ellen’s child!
A: You are right; I overlooked that. What is the legal implication of that?
B: Peter acted under force majeure, so there was a ground of justification.
A: Yes. And as a result, breaking a window wasn’t a tort after all.
B: Indeed. There is no ground for Peter’s duty to repair the damages.